21012201100222 has 8 divisors (see below), whose sum is σ = 31807460381400. Its totient is φ = 10409714306424.

The previous prime is 21012201100207. The next prime is 21012201100223. The reversal of 21012201100222 is 22200110221012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21012201100196 and 21012201100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012201100223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48193121572 + ... + 48193122007.

It is an arithmetic number, because the mean of its divisors is an integer number (3975932547675).

Almost surely, 2^{21012201100222} is an apocalyptic number.

21012201100222 is a deficient number, since it is larger than the sum of its proper divisors (10795259281178).

21012201100222 is a wasteful number, since it uses less digits than its factorization.

21012201100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96386243690.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21012201100222 its reverse (22200110221012), we get a palindrome (43212311321234).

The spelling of 21012201100222 in words is "twenty-one trillion, twelve billion, two hundred one million, one hundred thousand, two hundred twenty-two".